I just did a cursory look at WSSA and Lee Lovett. I am not a speech language pathologist. I have no education or specialized training in stuttering. I'm not qualified to recommend for or against WSSA. But I'm skeptical. The website felt like a sales pitch. He offers some solid advice in his YouTube tips. His thoughts on some things align with my own. I don't agree with all of his advice. E.g. "I found other ways to avoid stuttered words." It is my belief that avoiding words is problematic. That if you truly achieve fluency, avoidance strategies become unnecessary. If you have the means, I would recommend seeking out a qualified SLP who specializes in stuttering. Which is sometimes challenging to locate. I often recommend people contact local universities with a speech pathology program to help them connect with qualified SLPs in their area. Even if you don't have a local university with such a program, then seek out a university further away.